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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1253) ConcurrentModificationException and NPE in JobControl
Date Thu, 12 Apr 2007 14:52:32 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1253?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12488389
] 

Hadoop QA commented on HADOOP-1253:
-----------------------------------

-1, build or testing failed

2 attempts failed to build and test the latest attachment http://issues.apache.org/jira/secure/attachment/12355424/hadoop-jobcontrol-v2.patch
against trunk revision r527711.

Test results:   http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/39/testReport/
Console output: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/39/console

Please note that this message is automatically generated and may represent a problem with
the automation system and not the patch.

> ConcurrentModificationException and NPE in JobControl
> -----------------------------------------------------
>
>                 Key: HADOOP-1253
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1253
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.12.3
>            Reporter: Johan Oskarson
>            Priority: Minor
>         Attachments: hadoop-jobcontrol-v2.patch
>
>
> toArrayList(Hashtable jobs) in JobControl.java isn't synchronized and it resulted in
a ConcurrentModificationException.
> checkRunningState in Job.java can throw a NullPointerException if running = jc.getJob(this.mapredJobID)
fails, leaving running null.

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